Stamping-machine.



H. W. WINTER.

STAMPING MACHINE.

APPLlCATlON men 050.21. 1910.

Patent-ed Aug. 10,1915,

3 SHEETS-SHEET I.

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i WT/VfS'SESZ H. W. WINTER.

STAMPING MACHINE.

APPLICATION FILED DEC.27,1910.

0 z 62 Z 4 4 S Patented Aug. 10, 1915.

3 SHEETS-SHEET 2.

H. W. WINTER.

STAMPING MACHINE.

APPLICATION FILED 050.27. 1910.

1.149340. Patehted Aug. 10,1915.

3 SHEETS-SHEET 3.

BEST AVAILABLE CQPY 'tlh l i TATES AT HENBY 'W, WINTER, OF METHUEN, MASSACHUSETTS, ASSIGNOR T8 UNITED SHQE,

MAGHIITERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF New JEESEY.

STAMPING-MACHINE.

Application filed December 27, 1910.

To {ZZZ whom it may concern:

it known that E, HENRY W. WINTER, the United States, residing at fie county of Essex and State ctts, have invented certain Im- Stomping-Mochines, of which lescription, in connection with ng drawings, is e specificaw ence characters on the drawlike parts in the several to machines for hurning a trade "on relates ossmg or ortions of boots or shoes.

, oi the invention is to improve QOIlStYuGiLlOI-l and orgenizction of stampmachines as heretofore constructed, to crease the speed of their operation by renderi them automatic in action, to imve t v accuracy and to" adopt them for certain opera one which it has not been possible to eiiect satisfactorily by machines of this class as fornlerly constructed.

In stamping leather difiering in quality and grade it is necessary to vary the length of time during which the type or die reineing in engagement with the Work. For example, in burning a trade mark upon coarse, dark colored leather the time required to produce a perfect mark will be much longer than the time required to produce the some mark on a line, light colored leather. it is also desirable to vary the length of the impression according to the size of the mark or inscription to be made, a. trade mark covering a large area requiring more time than a mark in size or case number, for example, chine herein disclosed comprises a Work port or platen, a stamping head and 7. nism for causing relative movement the head to impress Work placed ee'o n important to es in me p ect the se 1 stamp f the machin Nadia M19 I fipecification of Letters Patent.

,iption upon sheet n'icterial,v

ia tented Aug, 1%, 1815 Serial No. 599,495.

Work, by a rotatable actuator, such as a com or eccentric acting through suitable connecting mechanism and is brought to rest upon engaging the Work. After the required intervel, which may be "preliminarily determined by the operator, the actuator is restarted and the stamping head retracted.

In the machine herein disclosed the actuator is rotated from the main shaft of the ma,- chine, being disengaged from its driving mechanism and brought to rest when the stamping head is in its lowest position by the operation of a clutch dog. A controlling device arranged to be driven from the main shaft, and, after an interval which depends upon the initial setting of the controlling device by the operator, the dog is retracted and the actuator restarted. The controlling device is thereupon automaticeily disconnected and returned to initial position where it may be adjusted if desired to vary the length of the next impression.- As herein shown, the stampin head and controlling device are actuate from the main shaft by separate trains of mechanism and this arrangement constitutes an important feature of the invention. In addition to lending itself particularly well to therequirements of the machine from a mechanical standpoint, this construction permits the operation of the controlling device I and close in position to allow for slight variations in the thickness of the work and to prevent an excessive degree of pressure.

The construction whereby ayielding action of'the die holder is secured constitutes another important feature of the inventiom inasmuch as it is essential to regulate to a nicety the degree of pressure exerted by the heated die upon the work. In the embodiment of the invention herein shown a compression spring is interposed between. a thrust piece adjustably mounted in the stamping head and a shoulderon the stem of'a die-carrying member. The thrust piece is perforated to receive the stem of the diecarrying member and the stem is provided with an adjustable stop so that the compression of the spring and also the position of the die may be adjusted, both adjustments being effected independently.

Still another feature of the invention relates to the work support. or platen and gages for locating the work properly thereon. In order to permit access to the interior of the machine and the gage adjusting mechanism a removable bed plate is provided and the platen and gages are mounted upon this plate. A slide carrying sockets is movably mounted in wayson the bed plate and gage pins project from said sockets through the platen, beingyieldingly supported in said sockets in order that they may move out of the path of the stamping head during the impression.

The features above enumerated and others incident to the invention will be best understood and appreciated from the following source of power.

description of a preferred embodiment selected for purposes of illustration in connection with the accompanying drawings, in which Figure 1 is a View in perspective. Fig. 2 is a sectional side elevation. Fig. 3 is a rear elevation partly in section. Fig. 4 is a view in perspective of the removable bed plate and gage mechanism. Fig. '5 is a view in perspective of the controlling shaft.

I side with an elongated hub and on the other is recessed to receive one end of a loose clutch member 16having a cam or eccentric 17 formed integral therewith. A clutch controlling ring 18 is fitted upon the member 16 and is provided with pockets for rollers, as in the well known type of Horton clutch.

When the clutch is disengaged the rollers to rotate the ring relatively to the loose member 16 for causing the clutch to engage.

Reverse rotation of the loose member 16, due to the action'of' the'spring 22, is 'prevented by the frictional engagement of a stationary arm 15 with' a fiber disk 13 pinned to the loose member 16. Forward rotation of the ring 18 is prevented by one of two dogs 24, 26, mounted to turnabout the transverse spindle 28 as an axis and arranged to engage teeth 30, 32, respectively on the periphery of the ring 18. Rotation of the eccentric 17 and movement of the stamping head, relatively to the platen, as will hereinafter appear, is controlled by moving tlw dogs 24, 26 to engage or disengage the teeth-on. the ring 18.

.The stamping head of the machine comprises a tubular slide or carrier 40 having parallel oppositely disposed ribs fitted'to slide in vertical guideways formed partly in the frame and {partly by face plates 42 secured to the frame. The die or type holder 46 has a tapered shank 47 which is remov'ably received in a tapered socket formed in the lower end of an adjustable socket piece orstem 48 in the carrier 40.

.The die holder is yieldingly maintained in position by a stiff spiral spring 50 bearing at its lower end against a shoulder" formed on the socket piece or stem 48 and at its upper end against the thrust piece 52 threaded into the upper end of the tubular carrier 40. The compression of the spring 50 may be adjusted by turning the thrust piece 52 into or out of the carrier 40. The socket piece or stem 48 is grooved at its rear side and is prevented from turning by a screw 43, the end of which projects through the carrier 40 [and into the groove. The carrier'is split or slotted at its upper end and may be contracted to clamp and maintain the thrust piece in any adjusted position by means of a binding screw 51 extending between ears formed on the carrier. at either side of the slot. The

thrust piece 52 is drilled to'receive the up per reduced end of the socket. piece or stem 48 which extends out through the thrust piece and is threaded to receive a pair of nuts which act as an adjustable stop to p'rerier ll) are a pair of lugs 44 which form a short guideway for a transverse block 45 pivotally connected to the forward .end of a lever l? which is oscillated by't-he eccentric 17 acting through an eccentric rod 49. The oscillation of the lever l7 imparts vertical reciprocatory movement to the carrier 40 to effect the stamping or marking operation and then to retract the carrier.

The die holder 46 extendstransversely of the carrier :0 and is bored out to receive a sleeve of insulating material and a pair of resistancecoils 54 whereby the die or type may be electrically heated. On its lower face and adjacent to the heating device the holder l6 is provided with a fixed under cut rib 55 with which cooperates a movable undercut slide 56 normally pressed toward the rib 55 by a spring .57. The slide 56 may be retracted to permit the insertion or removal of the type or die by a lever .59 pivoted to a lug at the rear of the holder and having an angularly extending toe or projection engaging a portion of the slide 56. The platen 60 is attached to a removable hed plate 62 having a beveled rear edge adapted to fit into an undercut slot formed in the casing, the plate being secured in place at its front end by suitable screws. A pair of adjustable gage pins 6% project upwardly through the platen 60 and serve to locate the edge of the work with relation to the stamping head, while an adjustable gage 66, mounted in a perforated lug 67 at the rear side of the bed plate 62, serves to determine the position of the end of the work. One desirable manner of arranging the gage pins 6% is illustrated in Fig. 4c in which 68 indicates a pair of undercut ways between which is slidingly mounted a plate 69 having sockets '70 for the gage pins 64: and a threaded ear for an adjusting screw 71. The ad justing screw is provided with collars for engaging a fixed part of the casing so that rotation of the screw will move the plate 69 and the gage pins; forwardly or rearwardly. The pins (ll are yieldingly mounted in the sockets YO, as shown in Fig, 2, in order that they may be depressed flush with the surface or" e platen when engaged by the slide 5% on the downwardmovement of n head. The 66 may be adcoaching set screw threaded into l mped in adjusted poans. the mechanism for con on of the l 24. 26, and be found that starting and While the :i

elapsed. The dog 24 is keyed or otherwise rigidly attached to the spindle 28 and is moved out of engagement with the tooth 30 on the controlling ring 18 when the spindle is turned by the depression of an arm 72 1* also keyed to the spindle. A suitable spring acts upon the arm 72 to lift it and maintain the dog 24 in operative position. The arm 72 is provided with a hardened bearing piece at its outer end which normally stands in the path of a vsprin pressed latch piece 73 on a. treadle actuate lever 74: pivoted to the frontside of the casing. The lever 7i is normally elevated by a suitable spring, upward move ment being limited by a stop 75 on the lever which engage the casing at a point. below the adjusting screwil. \Vhen the lever 7 is depressed by the treadle rod the latch piece 73 swings the arm 72 downwardly, thus retracting the dog 2% and starting the 8 rotation of the eccentric 17. The latch piece 78 is pivotally mounted upon the lever 74 and normally pressed outwardly by a suit able spring. Outward movement of the latch piece is limited by a pin 76 projecting from the lever 74 into an enlarged aperture in the latch. On the downward movement of the lever 74, after the arm 72 has been suliiciently depressed to retract the dog '24, the end of the latch piece 73 encounters a fixed pin 77 projecting from the casing and thereby is moved to disengage the arm 72. Further downward movement of the treadle rod carries the latch piece '73 below the arm 72 and on the upward movement the treadle rod the latch piece is permitted to yield inwardly and pass the arm 1' without disturbing it. It will be seen that. the mechanism above describedinsures non-repeating action of the machine.

The dog 26 normally rests on the periphery of the clutch ring 18, being maintained in position by a sprin extending between a rearwardly project-i l the dog and a stationary ran It will be understood th 1 on the clutch ring ar relatively to each oth in alinement with the u g I 32-, which is behind the tor located in alinement with the the tooth 30 is released ti clutch ring is permitted to rot; half a revolution, and is then stop; engagement of the dog 26 with the too The eccentric 17 is rotated sin i with the clutch ring and is bi with the latter when the gages the work. The 1 remain in engages lolding the sta determined int cally retracted p e-tense V fenced z.

Mounted for turning movement about the main' shaft 2 is-a bearing bracket 82 in which is journaled a shaft 83 having at its rear end a'worm wheel 84 which meshes with the worm 10 on the main shaft. On its forward end the shaft 83 is provided with-a worm 85 arranged to mesh with a worm wheel 86 on a transverse shaft 81. The bearing bracket 82 is supported at its forward end in such a way as to maintain the worm 85 in mesh with the worm wheel 86 by means of a hook shaped'knock ofi' piece 87 pivotally mounted on the transverse pin 80. On one end of the shaft 81, which will be termed hereinafter the controlling shaft, there is rigidlysecured an arm 88 carrying a short pin which is arranged to engage the arm 79 of the dog 26 and swing the latterout of engagement with the tooth 32. The worm wheel 86 is provided with a pin 89 which is adapted to engage the knock off piece 87 and swing it rearwardly releasing the forward end of the bearing bracket 82 which thereupon drops carrying the worm 85 out of mesh with-the worm wheel 86. Rigidly secured to the controlling shaft 81 is a sleeve 90 to which is connected a torsional spring 91 tending to rotate the shaft in the opposite direction from that in which it is moved by the worm 85. The spring 91 is free to reversely rotate the shaft 81 when the worm 85 is disengaged from the worm,wheel 86. The reverse rotation thereof is limited by an' adjustable stop 92 which projects from the hub of an apertured disk 93 and stands in the path of'the pin 89, projecting on both sides of the worm wheel 86. The position of the stop arm 92 and consequently the initial position of the controlling shaft 81, may be adjusted by turning the disk 93. The latter is located on one side of the frame of the machine, as clearly shown in Fig. 1, and may beheld in any adjusted position by a spring pressed locking pin 94, which is mounted in a casing secured to the frame adjacent to the disk.

It will be seen, that as the controlling shaft 81 is rotated by the worm 85 the arm 88 acts to retract the dog 26, and then the pin 89 acts upon the knock off piece 87 to release the bearing bracket 82. In order to swing the forward end of the bearing bracket upwardly carrying tbe worm 85 into mesh with the worm wheel '86 when the ma chine is started, there is br'ovided on the spindle 28 a rearwardly pi tijecting arm 95 arranged in the path of a lug, projecting i from one side of the bearing bracket. It

will be seen that as the spindle 28 is turned in starting the machine, the arm 95 will engage the lug upon the bearing bracket and lift the bracket into engagement with the knock off piece 87, the latter being permitted to swing rearwardly when displaced,

' bracket and being by a hook shaped I ortion on the bearing curate timing of the machine particularly. 'zwhen an. impression of brief duration is desired. In operating the machine the work is rawn into -engagement placed upon the platen 60 with its edge against the gage pins 64, and its end against the gage rod 66, the gages having been previously adjusted in accordance with the po'- sition on the work at which the impression should appear. The treadle rod is .then depressed disengaging the dog 24 from the .tooth 30 and simultaneously swinging the worm 85 into mesh with the worm wheel 86.:

As soon as the dog 2& has been moved suifi 9o ciently to release the tooth, the spring 22,;- lmmediately turns the ring 18 so that the? tooth is moved out of the path of the dog: 1

24, and the latter bears against the back off}.-

the tooth when the spindle 28 returns to its initial position on being disengaged by the latch piece 7 3. The parts of the machine in are shown in this position in Fig. 2. The movement of ring 18 sets the eccentric 17 in motion, and the stamping head is moved downwardly to engage the work. When this occurs the tooth 32 has moved into position to be engaged by" the dog 26, and the eccentric 17 is therefore brought to rest with the die in engagement with the Work. In

- the meantime the controlling shaft 81 is be-' ing rotated by the worm 85 from its initial position, which is determined by the position of the stop 92, and after the desired interval the arm 88 acts to retract the dog 26,

thus permitting restarting of the eccentric and effecting upward movement 7 of the stamping head. After the arm 88 has acted upon the dog 26, the pin 89 comes into engagement with the knock off piece 87, and

releases the bearing bracket 82 which there- 4 upon carries the worm 85 out of mesh with the worm wheel 86, and permits the torsional spring 91 to return the controlling shaft 81 to-its initial eccentric has complete osition. When the one revolution and returned the stamping head to its highest 1 point the ,tooth 30 is again engaged by the dog 24 and the eccentric brought to rest.

The present machine is adapted for 'impressing different kinds of marks upon different classes of work. If it is desired to burn a trade mark into the work, a suitable 'die is' inserted in the holder and-heated to the proper temperature by means of the heating coils 54, and the regulating disk 93 is set for an impression of the proper duration. In stamping a gold leaf mark upon the work, a thin sheet of gold leaf is placed over the 'worl; after the latter has been sized, and. a heated die is pressed on the gold leaf causing the latter to adhere to the material where it has been engaged by the die. The interval required for a perfect impression .may be determined by experiment, and the regulating disk 93 set accordingly. In the machine herein disclosed the length of the impression may be varied from an instantaneous impression to one lasting about 20 seconds. Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States is 1. A machine of the class described having, in combination, a main shaft, a movable die operatively connected to the main shaft and arranged to be actuated thereby, and a controlling device for regulating the length of the impression of the die having separate driving connection with the main shaft and arranged to be set in motion simultaneously with the movement of the die.

2. A machine of the class described having, in combination, a main shaft, two seem rate trains of mechanism operated by the main shaft, a die actuated through one train of mechanism, and a controlling device for governing the movement of the die actuated through the other train of mechanism, and means for simultaneously setting in motion both trains of mechanism.

3. A machine of the class described having, in combination, a main shaft, two separatetrains of mechanism operated by the main shaft, treadle actuated means for Simultaneously setting in motion both trains of mechanism, a die actuated through one train of mechanism, a controlling device actuated through the other train, and means for interrupting efi'ective communication through the latter train of mechanism when the controlling device acts.

l. A machine of the class described having, in comivination, a driving shaft, a gear continuously and positively driven from said shaft, 2. carrier arranged to be actuated and having a spring and the driving shaft w ved into yielding enwork by the driving "atically acting controlindependently of the i 'ng the duration of the engagement of the die and the machine of the class described having, in combination, relatively movable stamping head and platen, a driving memher and two separate trains of mechanism one of which efiects relative movement of the head and platen to impress the work, a controlling devicev for governing the length of the impression arranged to be actuated by the second train of mechanism, and a single device operative for establishing simultaneously effective communication through both trains of mechanism.

6. A machine of the class described having, in combination, a platen, an oppositely disposed stamping die, a main shaft, an eccentric having operative connections with the main shaft, mechanism actuated by said eccentric for relatively moving the platen and die to impress the work, controlling mechanism having independent connection with, and being operated by, the main shaft for regulating the length of the impression, and treadle actuated means having separate connections for simultaneously setting in operation the eccentric and the controlling mechanism.

7. A machine of the class described having, in combination, a stamping head. a platen, and mechanism for relatively moving said head and platen comprising an eccentric and lever, a clutch whereby said-ed centric may be rendered operative or inoperative, a clutch controlling ring, a pair dogs arranged to act on said ring to cause said clutch to disengage, means under the control of the operator for moving one of said dogs to permit said clutch to engage, said second dog acting thereafter to disengage said clutch, and means acting auto matically after a predetermined interval to move said second dog permitting the clutch to engage again.

, 8. A machine of the class described h ing, in combination, a stamping head, a platen, means for relatively moving said head and platen to impress work placed therebetwee'n, a driving shaft, and mechanism connectedtherewith for effecting such relative movement, a rotatable controlling device for determining the length of said im-,

ing, in combination, a stamping head and platen, a driving shaft and connections for moving one relatively to the other to lmpress the work, a controlling device for regulating the length of the impression, and

a bodily movable shaft constituting an operating connection between the driving shaftand controlling device arranged to he moved out of operative connection with the latter at the conclusion of the impression; 1

10. A machine of the class described having, in combination, a stamping head and platen, a driving shaft and an actuator rotated thereby, mechanism constructed and arranged to cause relative approaching -movement of said head and platen during the first part of the movement of said actuator, automatically acting means for terminating said approaching movement, a controlling device, a shaft driven by said driving shaft for operating said controlling device, and means for moving said shaft out of operative relation with said controlling device after the latter has acted to permit restarting of the actuator.

.11. A machine of the class described having, in combination, a stamping head, an actuator therefor, a controlling device for said actuator, an oscillatory bracket carry ing a shaft for operating said controlling device when the machine is started, means for automatically stopping said actuator Without affecting. said controlling device, said controlling device being constructed and arranged to permit restarting of the actuator after a predetermined interval of rest.

12. A machine of the class described, having, in combination, a stamping head, an actuator therefor, and controlling mechanism for the actuator comprising a dog for stopping said actuator, a rotatable iii-ember carrying a pin arranged to move said dog" to permit restarting of said actuator when said member has rotated to a certain position, and .a swinging bracket carrying a shaft for rotating said member.

13. A machine of the class described having, in combination, a stamping head, an actuator therefor, and controlling mechanism for the actuator comprising a dog for stopping said actuator, a rotatable member arranged to move said dog to permit restarting of said actuator after a predetermined interval of rest, and means for returning said rotatable member to initial position after the actuator has been restarted.

14. A machine of the class described having, in combination, a stamping head, an actuator therefor, and controlling mechanism for the actuator comprising a dog for stopping said actuator, a rotatable member for moving said dog to permit restarting -of said actuator after a predetermined interval of rest, driving means for said, rotatable member, a spring for returning said member to initial position, and means for disconnecting said driving means to permit said spring to act.

15. A machine of the class described having, in combination, a stamping head, an actuator therefor, and controlling mechanism'for said actuator comprising a dog for stopping said actuator, a rotatable member for moving said dog to permit restarting of the actuator, a spring for returning said rotatable member to-initial position, and an adjustable stop for determining the initial position of said rotatable member.

16. A machine of the class described having, in combination, a support, a die, a main shaft having actuating connections for causing relative movement of the support and die, a clutch included in'said connection, and automatically acting means for controlling the clutch having an independent actuating connection With the main shaft and being arranged to cause said die and support to be relatively separated after an impression of predetermined duration.

17. A machine of the class described having, in combination, a stampinghead and platen, a continuously rotating shaft, a swinging shaft having a transverse axis and being geared to said first mentioned shaft and rotated thereby, transmission mechanism interposed between the first mentioned shaft and the stamping head, and a controlling device arranged to be actuated by said swinging shaft when the transmission mechanism is set in motion.

18.v A machine ofithe class described having, in combinationfia relatively movable stamping head and Work support, a plate mounted for sliding movement below said Work support, sockets *barrieil thereby, and gage pins yieldingly mounted in said sockets, projecting above said support and simultaneously adjustable by the movement of the plate.

19. A.machine of the clam described having, in combination, a casing, a stamping head movably mounted therein, a removable plate secured to said casing in alinement with said head, a platen mounted on one side of said plate, an adjustable gage carrying member mounted on the other side thereof, and gages projecting through said platen. I

20. A stamping machine having, in combination, a'driving shaft, a driven member, a clutch for engaging said shaft and driven member, and automatic clutch controlling means comprising a dog disposed toeifect disengagement of the clutch after a predetermined movement, retracting mechanism for said dog including a bodily movable shaft operated from said driving shaft, and a knock off piece automatically actuated from the main shaft to interrupt the connection between said shaft and said retracting mechanism for the dog by rendering inoperative said bodily movable shaft.

21. A machine of the class described having, in combination, a removable bed plate, a platen carried thereby, a stamping head mounted for reciprocation toward and from the platen, an adjustable slide mounted on the lower side of the bed plate, and yielding name to this specification in the presence of gage pins 'caliried by the slidg, privljeetinlgi two subscribing Witnesses. throug the p aten and ispose in t e pat 7 I 4 of the stamping head so as to be depressed HENRY INTER 5 by the stamping head during the stamping Witnesses:

operation. NORMAN C. HUSSEY, In testimony whereof I have signed my ELMER B. GRUSI'I. 

